Sleeve-valve mechanism



July 14, 1925.

K. W. NAJDER SLEEVE VALVE MECHANISM Filed Nov. 5, 1922 Patented July 14', 1925.

NITED. ST ES PATENT OFFICE.

mm W. NAJ'DEB, OI DETROIT, MICHIGAN, ASSIGNOB F ONE-FOURTH TQ ISAAC g S. GELIJEBT, OF DETROIT, MICHIGAN.

SLEEVE VALVE MECHANISM.

Application filed November To all whom it may concern:

Be it known that I, Ka'smm W. Naaunn, a citizen of the United States, and residing at Detroit, in the county of Wayne and State of Michigan, have invented a new and Improved Slceve-Valve Mechanism, of which the following is a specification.

This invention relates to the valve construction of internal combustion en 'nes, particularly to that class of valves whic are in the form of sleeves andconstitute the linings of the engine cylinders, and its object is to provide a novel t of valve operating mechanism which wil cause every pomt on the valve to travel a triangular pat This invention consists in n cy inder having intake and exhaust ports, a sleeve valve rotatable and slidable insaid cylinder and having a rt adapted to register with the intake an exhaust ports alternately, and a valve 0 rating mechanism adapted to cause, the in ividual parts of the sleeve valve to travel a trian lar path.

It also consists in the details of construction illustrated in the accompanying drawing and particularly pointed out in the claims.

In the drawing, Fig. 1 is a vertical section of an e embodying my improved valve mechamsm. Fig. 2 is a detail on a larger scale of the gearing for actuatin the valve. Fi 3 and 4 are end and side 0 eva-.. tions of e cross head for actuating the valve. Fig. 5 is an elevation of the cross head guide and of the cross head therein. Figs. 6 and 7 are details of gearing therefor. Fig. 8 is a diagram showing the relative movements of the parts. Fig. is a detail of a modified construction einhodying a series of sets of ports.

Similar reference characters refer to like parts throughout the several views.

The engine shown in the drawing embodies a crank case 1, crank shaft 2 with crank pin 3, connecting rod 4, cylinder 5 with its water jacket 6, intake ssage 7 and exhaust passage 8, piston 9, cylinder head 10 with its spark plug 11 and packing rings '12 and 13 and the sleeve valve 14. Means are provided to cause the valve to move'circumferentially and longitudinally in opposite directions and then circumferentially alone so that each portion of the valve travels a triangular path.

A shaft 16 is driven by the main shaft 2 the 8, 1922. Serial No, 588,772.

at one-half the speed of the main shaft i i any desired manner and in either direction gears 17, 18 and 19 being indicated. On this shaft 16 is a screwar 20 'mesh' with a similar gear 21 on t e stub shaft which has a cross blade 23 at one end extending into and slidable in the move 24 in the cross-head 25. This crosscad-is mounted in a guide 26 having a substantially triangular recess 27 to receive the-cross-head. A pin 28 extends from this cross-head and is slidable in a ball-29 and a sleeve 30 attached thereto. The ball is mounted in a socket 32 attached to the valve 14,, preferably to the lower end thereof. v

The design of the recess 27in the guide 26 and of the cross-head 25 are-such that, the rotation of the shaft 22will' cause the axis of. the pin 28 to travel a: triangular path which is also'substantially the path ofthe the valve 14:.

g The cylinder is formed with an intake p'ort'34 and exhaust port 35 connecting to the p iii 7and 8 respectively and the valve 14 18 formed with a port 36. The diagram Fig. 8 indicates the relative posit'bns of these ports during the operation of engine, the dotted rectangles A, B, C and D indicating the positions of the port 36 in the valve relative to the ports 34 and 35'at the times the iston 9 is at the end of the scavenging, inta e, compression and explosion or working strokes respectively. This set of ports ma be repeated around the cylinder in whic case the .p s 7 and 8 may both extend entirely aroun the cylinder, portions thereof being displaced Ion 'tudinall of the cylinder/to connect to t e severa ports 34 and 35 which could then be in the same transverse plane, as indicated in Fig. 9. This permits the individual ports to be' made uite small and the necessary movement of e valve to be reduced to a minimum.

The details of construction and the roportions of the parts may all be change by those skilled in the art without departing from the spirit of my invention as set forth in the following claims.

I claim v 1. In an engine, the combination of a cylinder having intake and exhaust ports, a sleeve valve in the cylinder and having a port,'a piston slidable within said valve and no center of the ball 29 and ofevery point on v cylinder having means to cause the valve to turn vvithout longitudinal movement to. cause the valve port to register with the cylinderpoi ts alternatel and then turn back the same distagc'e w 'le moving back and forth longitu- 2. an engine, the combination of a intake and exhaust ports, a sleeve valve 1n the cylinder and having a port adapted to register with. the cylinder ports alternately, apiston slidable within said valve and means to cause each point of the Iyalve to'travel a substantially triangular p 3. In an engine, the combination of a cylinder having intake and exhaust ports, a sleeve valve in the c linder having a port adapted to register with. the. cylinder ports alternately, a valve shaft driven by the engine at one-half crank shaft speed, a guide, a cross head mounted therein and having a crank pin caused to move in a triangular said guide, means to connect the,

path b valve s aft to saidcroSshcad and means connecting-the crank pinto the valve.

4. In an engine, the combination of a c linderhaving intake and exhaust ports, 'a sleeve valve in the cylinder. having a port adapted to register with the cylinder ports alternately, a valve shaft driven by the engine at one-half crank shaft speed, a guide, a cross head mounted therein and havin -a crank pin caused to move in a triangu ar path by said guide, means toconnect the valve shaft to said cross head, and means connecting the crank pin to the valve commovement causing the valve ports to travel in a substantially triangular path.

6. In a four-cycle internal combustion engine, a cylinder having inlet and exhaust ports, a cylindrical valve arrangedsubstantially co-axial with the cylinder and having 4 J a combined slidable and rotatable movement causing the valve port to travel in a substantiallytriangular pat-h, one side of which is in a plane perpendicular to the axis of the cylinder, a piston slidable within said valve and means to actuate the valve.

7. In an engine, the combination of a. cylinder having inlet: and exhaustports, a cylinderical valvemounted within the cylinder, and means for imparting to said valve a substantially triangular movement, said inlet and exhaust ports of the cylinder being in a plane which is at right angles to the axis of the cylinder, one side of which is in a plane perpendicular to the axis of the cylinder to control the inlet and exhaust.

KASIMIR W. NAJDER. 

